LP6220ASPF

Designed for analog and digital satellite receivers/sat-TV, the LP6220A is an adjustable voltage regulator, specifically to provide the 14V/19V power supply and the 22kHz tone signaling to the LNB converter in the antenna dish or to the multi-switch box. LP6220A consists of a BOOST converter with a internal power MOS running at 1MHz switching frequency and a LDO regulator which with push-pull output stage generates clean 22-kHz tone signal superimposed at the output even at zero loading. The EXTM can accept a DiSEqC command and transfer it symmetrically to the output to meet DiSEqC 1.x protocol. Other features include over temperature protection and under-voltage lockout (UVLO). The LP6220A is available in a space saving ESOP-8 package.

Applications

• LNB Power supply For DVB-S/S2/ABS
• Digital Set-Top-Box Satellite TV cards
• STB Satellite Receiver
• PC Card Satellite

Key features

• Low noise output to avoid sensitivity of Can Tuner and DISH’s LNA dropping down
• Single chip solution on 700mVpp 22KHz EXTM with 10μs Trise/Tfall for less Transferring noise
• LNB Voltages (14V/19V) compatible with common standards, Push-pull output stage minimizes 14→19V and 19→14V output transition times
• External 22KHz EXTM input
• 1MHz Switch Frequency Boost
• Integrate Low Noise Linear Regulator
• Under Voltage Lockout
• Output Short-Circuit Protection
• Output Over-Current Protection
• Over-Temperature Protection
• Available in ESOP-8
• RoHS Compliant and Halogen Free